Live imaging and single-cell analysis reveal differential dynamics of autophagy and apoptosis.
Live imaging and single-cell analysis reveal differential dynamics of autophagy and apoptosis.
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DOI:
10.4161/auto.25080
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发表时间:
2013-09
期刊:
影响因子:
13.3
通讯作者:
Lipinski MM
中科院分区:
文献类型:
--
作者:
Xu Y;Yuan J;Lipinski MM
Autophagy is induced by many cytotoxic stimuli but it is often unclear whether, under specific conditions, autophagy plays a prosurvival or a prodeath role. To answer this critical question we developed a novel methodology that employs automated live microscopy and image analysis to measure autophagy and apoptosis simultaneously in single cells. We used this approach to perform a systems-level analysis of pathway dynamics for both autophagy and apoptosis. We found that induction of autophagy in response to different stimuli is uniformly unimodal; in contrast, cells induce apoptosis in an all-or-none bimodal fashion. By tracking the fate of single cells we found that autophagy precedes apoptosis, and that within the same population apoptosis is delayed in cells that mount a stronger autophagy response. Inhibition of autophagy by knocking down ATG5 promoted apoptosis, thus confirming that autophagy plays a protective role. We anticipate that our single-cell approach will be a powerful tool for gaining a quantitative understanding of the complex regulation of autophagy, its influence on cell fate decisions and its relationship with other cellular pathways.
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影响因子:
11.8
作者:
Lipinski, Marta M.;Hoffman, Greg;Ng, Aylwin;Zhou, Wen;Py, Benedicte F.;Hsu, Emily;Liu, Xuxin;Eisenberg, Jason;Liu, Jun;Blenis, John;Xavier, Ramnik J.;Yuan, Junying
通讯作者:
Yuan, Junying
影响因子:
13.3
作者:
de la Calle, Claire;Joubert, Pierre-Emmanuel;Albert, Matthew L.
通讯作者:
Albert, Matthew L.
影响因子:
13.8
作者:
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通讯作者:
BURGESS, GM
影响因子:
4.6
作者:
Chen, XW;Zhou, XB;Wong, STC
通讯作者:
Wong, STC
影响因子:
13.3
作者:
Larsen, Kenneth Bowitz;Lamark, Trond;Bjorkoey, Geir
通讯作者:
Bjorkoey, Geir